Add 21/2 and 70/75
1st number: 10 1/2, 2nd number: 70/75
21/2 + 70/75 is 343/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 2 × 75 = 150,
21/2 = 21 × 75/2 × 75 = 1575/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
70/75 = 70 × 2/75 × 2 = 140/150 - Add the two like fractions:
1575/150 + 140/150 = 1575 + 140/150 = 1715/150 - 1715/150 simplified gives 343/30
- So, 21/2 + 70/75 = 343/30
In mixed form: 1113/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+70/75 21/4+70/75 63/2+70/75 21/6+70/75 21/10+70/75 21/14+70/75